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14.0: Prelude to The Somatic Nervous System

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  • When high temperature is sensed in the skin, a reflexive withdrawal is initiated by the muscles of the arm. Sensory neurons are activated by a stimulus, which is sent to the central nervous system, and a motor response is sent out to the skeletal muscles that control this movement.

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    OpenStax Anatomy & Physiology (CC BY 4.0). Access for free at

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